package com.atguigu.springcloud.service;


import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {


    //正常访问
    public String paymentInfo_OK(Integer id){
        return "线程池:" + Thread.currentThread().getName() + " paymentInfo_TimeOut,id:" + id + "\t" +
                "O(∩_∩)O哈哈~";
    }


    //超时访问
    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "5000")
    })
    public String paymentInfo_Timeout(Integer id){
        int timeNumber = 1;
//        int age = 10/0;
        try {
            TimeUnit.SECONDS.sleep(timeNumber);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池:" + Thread.currentThread().getName() + " paymentInfo_TimeOut,id:" + id + "\t" +
                "O(∩_∩)O哈哈~  耗时(秒)" + timeNumber;
    }

    public String paymentInfo_TimeOutHandler(Integer id){
        return "线程池:" + Thread.currentThread().getName() + " 8001系统繁忙或运行报错paymentInfo_TimeOutHandler,id:" + id + "\t" +
                "/(ㄒoㄒ)/~~~";
    }

    //服务熔断 10s中10次请求超过6次失败
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),//是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),//请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"),//时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),//失败率到达多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id")Integer id){
        if (id < 0){
            throw new RuntimeException("id 不能为负数");
        }
        String serial = IdUtil.simpleUUID();
        return Thread.currentThread().getName()+"\t"+"调用成功，流水号："+serial;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id){
        return "id 不能为负数，请稍后再试，id: " + id;
    }



}
